[C]: add feature tests to help with warnings on CentOS.
[C]: add feature tests to help with warnings on CentOS.

real-logic/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,mikeb01/Aeron,mikeb01/Aeron,real-logic/Aeron